Replace the Battery in your Game Cartridge! **56k warning**

[Master Kirby]

The reason they last that long is that the cartridge draws a very small amount of energy. Most devices draw more power than a gameboy cartridge, so they need a more often change of batteries. That chart shows the discharge for the CR2025, which is the original battery. If you do have to replace it, you can use a larger battery that will last even longer. I used a CR2032, so it will last 1.3 times longer (220mAh instead of 165MAh).

[SupremeChampion]

but how does the battery fit? i mean i would think that it shouldn't have enough room to fit in there, the bigger battery i mean. i'm gonna guess there's enough room for you to put a bigger size in?

~The Italian Stallion

[Poryhedron]

The bigger battery has the same surface area; the circle is the same size. It's just close to a millimeter...how to put this...taller. As it happens, there's close to a millimeter of extra space in the cartridge's thickness. This means it might actually be better to go with the larger battery, not just for longer-lasting battery life but also so that the battery will be more securely held in place just by the cartridge walls.